Well, hmm. How would I inspect the result of the lucene Driver to see if, in fact, it favored me with any actual vectors?
On Sat, Dec 19, 2009 at 5:31 PM, Drew Farris <[email protected]> wrote: > The stack trace below suggests that the input file may not contain any > vectors because the code inside the while loop at 77, (esp. the > conditional starting at line 82) never fired and thus either (or both) > chosenTests or chosenClusters is empty. > > There should likely be some form of bounds check on line 98 of > RandomSeedGenerator, but that woundn't solve the problem if the input > file is empty. > > On Sat, Dec 19, 2009 at 5:07 PM, Benson Margulies <[email protected]> > wrote: >> ../hadoop-0.20.1/bin/hadoop jar >> examples/target/mahout-examples-0.3-SNAPSHOT.job >> org.apache.mahout.clustering.kmeans.KMeansDriver --input >> testdata/he_mahout_vector -c clusters -o output -m >> org.apache.mahout.common.distance.ManhattanDistanceMeasure -k 7 >> >> >> 09/12/19 17:02:18 WARN util.NativeCodeLoader: Unable to load >> native-hadoop library for your platform... using builtin-java classes >> where applicable >> 09/12/19 17:02:18 INFO compress.CodecPool: Got brand-new decompressor >> 09/12/19 17:02:18 INFO compress.CodecPool: Got brand-new compressor >> Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: >> 0, Size: 0 >> at java.util.ArrayList.RangeCheck(ArrayList.java:547) >> at java.util.ArrayList.get(ArrayList.java:322) >> at >> org.apache.mahout.clustering.kmeans.RandomSeedGenerator.buildRandom(RandomSeedGenerator.java:94) >> at >> org.apache.mahout.clustering.kmeans.KMeansDriver.main(KMeansDriver.java:158) >> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) >> at >> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) >> at >> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) >> at java.lang.reflect.Method.invoke(Method.java:597) >> at org.apache.hadoop.util.RunJar.main(RunJar.java:156) >> >
